Holocentric chromosome behaviour in Cuscuta (Cuscutaceae).
The extensive karyological differentiation in the Juncaceae is particularly attributed to the presence of a specialized condition: holocentric chromosomes (sometimes referred to holokinetic chromosomes or chromosomes with diffuse kinetic activity).
There exist many speculations about the primitive or derived state of holocentric chromosomes (recently summarized by Mola & Papeschi, 2006).
Moore and colleagues follow with a look at the possibility of a holocentric chromosome
ancestor existing between the cereal genomes.
Multiple locations of the rDNA sites in holocentric chromosome
of Rhynchospora (Cyperaceae).
Meiotic behaviour of the holocentric chromosomes
of Nezara viridula (Insecta, Heteroptera) analysed by C-banding and silver impregnation.
We need to keep in mind that the study of many other natural systems, for instance species with extreme chiasma localization, holocentric chromosomes
, achiasmatic conditions, presence of supernumerary segments, etc.
Ultrastructural characterization of the sex chromosomes during spermatogenesis of spiders having holocentric chromosomes
and a long diffuse stage.
C-heterochromatin polymorphism in holocentric chromosomes
of Triatoma infestans (Hemiptera-Reduviidae).
Holocentric chromosomes are also often described as polycentric or possessing a diffuse centromere.
Coordinated research on fundamental questions regarding chromosome evolution in sedges will both illuminate diversification patterns in one of the most diverse angiosperm clades and do much to explain how chromosome evolution operates in other organisms with holocentric chromosomes, few of which have been studied.
No obvious variation in chromosome structure accounts for the substantial karyotypic variability in Carex relative to other genera of the Cyperaceae and many other organisms with holocentric chromosomes (Dernberg, 2001).